Why not modeling all in the model, xref the other models there and at the end create an orthographic drawing of them?Īs you know, in some cases CAD allows you to work differently. My most important question is, why do you create an ortho already at the beginning. Because the ortho geometry is in 1:20 but your XREF is 1:1 and will be converted to 1:20 in ortho view, the XREF model is much to large for the ortho view and has to be rescaled. When you insert an XREF model to that model space, it will be inserted by default by 1:1.

If you insert an XREF to the model space, which is empty, the ortho view itself is scaled by a factor, by default 1:20.So, you attach an XREF to an empty model space? Correct?

My question to you: Note that in a model space of an ortho drawing, you will see nothing as all geometry will be added to the layout. You have mentioned that you have first started to create an ortho from your piping model and in this ortho drawing you have switched to model space to attach an XREF there.WE DO NOT WANT THAT EACH TIME WE VIEW THE ORTHOS VIEWS, WE HAVE TO TUR ON THE MANUALLY THE LAYERS OF THE XREF. When updating the Ortho view, the reference disappears, unfreeze its layers belonging to the Xref and therefore, we have to turn them on again. We did not want to include the 3D building to make the Ortho lighter.ġ-We make change or we continue drawing pipes in the piping 3D file. The file is finished: We have in the drawing the pipes drawn in 2D and in the background, the floor of the building. We prefer to insert the floor of the building drawn in 2D as an external reference.ģ-In paper space, we create the new Ortho, with the command 'New View'.Ĥ-We select the 3d files of pipes that we want to draw (they are in Plan 3D Drawings) and we select plant, scale, lines, etc and we give 'OK'.ĥ-Insert the new Ortho created. For the presentation of pipes in 2d plans within a project, we usually do the following:ġ-We create an Ortho drawing, according to the company's staff.Ģ- In this created file, inside the model space, we insert a reference cad of the floor of the building, for example, 1st Floor.dwg.

Creating an xref in autocad